There are different types of
glasses are available in market with its special features. These provide
the importance of glass in our life. For example spectacles support our
eyes for the dust particles and most of the used in our house for the
purpose for the beauty of our houses. Glasses
are also useful for the protection of chemicals, because it has
protected the harmful sun’s rays. At that time lenses has so many
qualities such as-high resistance power, flexibility, reliability etc.
Prescription glasses informs the right way for using the specs .it
specifies the value of the lenses it be prescribed. It is providing the
information of the patient which type of lenses for him. They indicate
the problem of the refractive error like myopia.
Hyperopic
etc. it provide the information of lenses, cylindrical lenses and
cylindrical correction. Cylindrical lens has provided the refractive
power in one direction rotational power of the cylindrical lenses is the
sign of the prescription. Modifying glasses is used for the purpose of
the reading columns. Glasses
is made up of lenses and it is very useful in our daily life it
protects our eyes for the harmful dust particles which is present in the
environment. Glasses are useful in many ways such as to decorate the
home it is useful. In the modern age bifocals presents co many types
such as a material called non crystalline. Some of the ingredients used
in spectacles such as-fused quartz, it is high glass temperature and to
add the other ingredients to change its properties.
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